Thermostat



FIG. 1 is a top, front, right side isometric view of a thermostat showing our new design;

FIG. 2 is a front view thereof;

FIG. 3 is a back view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a top view thereof; and,

FIG. 7 is a bottom view thereof.

The broken line showing of structural features is included for the purpose of illustrating non claimed subject matter and forms no part of the claimed design. 

I claim the ornamental design for the thermostat, as shown and described. 